In this case the author is implying that the Biblical account of Creation and the Flood is established and empirically verifiable fact that the scientists have failed to account for in their calculations.
Yes, and on that matter, if you don’t believe those things it would make sense to ignore them when discussing radiological dating.
The point though is that, logically, if one presumes there is a Creator, it is then logical to presume that the Creator could have impacted the dating methodology. So a scientist could not claim that the dating methods disprove the young-earth-creation theory, since the young-earth-creation theory presupposes a Creator and the flood.
There are a lot of arguments in this area that merely go to defending one side against the “refutations” of the other.